After framing the space, we put in supports where we planned to install the sliders (off-the-shelf from Home Depot), drywalled and painted. Bill attached rims to the slide-out shelves, while I sanded and stained yet more pallet wood for trim. We attached handles that match the ones on the kitchen cabinets (thanks, IKEA) and...we have a wonderfully spacious pantry in our compact kitchen.
We used leftover flooring underlayment to line the shelves... and now it's time to fill them.